Gable And Valley Roof Framing

3 inch rise per 12 run is a 3 12 pitch roof.

Gable and valley roof framing.

This type of roof is more complicated than the figure 2 1 most common types of pitched roofs. Framing a complex roof is one of the trickiest parts of home building. 4 12 through 9 12 are the most common pitches. A valley rafterforms a depression in the roof instead of a hip.

Where two gable roof lines meet the intersection forms inside corners called valleys. The diagonal rafter that runs from the intersection of the ridges down to the top of the walls at the inside. In the u s it is defined by the rise in inches to a 12 run. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is.

And the line length measurement from the roof peak to the building wall is the hypotenuse. Roof framing is the last major framing activity in the construction of a house. A hip rafter is called for only when framing a hip roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. But it doesn t have to be.

A roof for insulation solar panels and bedrooms intersecting roofs and gable ends form an interesting roofline and allow for usable space on the second level. Chapter 17 reading guide 465. The rise or height of the roof at its peak is the altitude of the triangle. The intersecting roof consists of a gable and valley or hip and valley.

The valley is formed where the two different sections of the roof meet generally at a 90 angle. Shed or lean to roof gambrel roof mansard roof dutch hip roof hip roof hip valley roof low slope flat roof gable roof gable roof dormer gable valley roof gable roof with shed roof addition roof styles which roof. If you begin with accurate as built measurements and use a construction calculator to do the math you can cut all of the rafters for most roofs on the ground in just one shot. This roof valley is a perfect example.

Like the hip rafter it extends diago nally from the top plate to the ridge. Whether you re tying in new gable dormers or adding a chimney cricket during roof framing giving the valley jacks a place to land is an easy task with these step by step instructions. The run or half the building span is the base of the triangle. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition.

Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Vertical rise over horizontal run. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.